# (c) 2023-present Eroax
# (c) 2023-present Yagich
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
extends GraphNode
class_name DeckNodeRendererGraphNode

## [GraphNode] based renderer of [DeckNode]

## Stores the data container [DeckNode] that the visuals of this [DeckNodeRendererGraphNode]
## are based off.
var node: DeckNode

const TYPE_COLORS := {
	DeckType.Types.BOOL:  Color("#7048e0"),
	DeckType.Types.STRING: Color("#dbe048"),
	DeckType.Types.NUMERIC: Color("#68e36c"),
	DeckType.Types.ARRAY: Color("#e36868"),
	DeckType.Types.DICTIONARY: Color("#79ede3"),
	DeckType.Types.ANY: Color.WHITE,
}

const PORT_USAGE_ICONS := {
	Port.UsageType.TRIGGER: preload("res://graph_node_renderer/textures/port_trigger_12.svg"),
	Port.UsageType.VALUE_REQUEST: preload("res://graph_node_renderer/textures/port_data_request_12.svg"),
	Port.UsageType.BOTH: preload("res://graph_node_renderer/textures/port_any_12.svg"),
}

const DESCRIPTOR_SCENES := {
	"button": preload("res://graph_node_renderer/descriptors/button_descriptor.tscn"),
	"field": preload("res://graph_node_renderer/descriptors/field_descriptor.tscn"),
	"singlechoice": preload("res://graph_node_renderer/descriptors/single_choice_descriptor.tscn"),
	"codeblock": preload("res://graph_node_renderer/descriptors/codeblock_descriptor.tscn"),
	"checkbox": preload("res://graph_node_renderer/descriptors/check_box_descriptor.tscn"),
	"spinbox": preload("res://graph_node_renderer/descriptors/spin_box_descriptor.tscn"),
	"label": preload("res://graph_node_renderer/descriptors/label_descriptor.tscn"),
}


## Setups up all the properties based off [member node].  Including looping through
## [method DeckNode.get_all_ports()] and setting up all the descriptors.
func _ready() -> void:
	title = node.name
	node.position_updated.connect(_on_node_position_updated)
	resize_request.connect(_on_resize_request)
	#node.port_added.connect(_on_node_port_added)
	#node.port_removed.connect(_on_node_port_removed)
	node.ports_updated.connect(_on_node_ports_updated)
	for port in node.get_all_ports():
		update_port(port)
	position_offset_changed.connect(_on_position_offset_changed)
	node.renamed.connect(_on_node_renamed)
	if node.node_type == "group_node":
		get_titlebar_hbox().tooltip_text = "Group %s" % node.group_id.left(8)
		if get_child_count() == 0:
			create_group_help_text()
	
	size = node.get_meta("size", Vector2())


## Connected to [signal GraphElement.position_offset_updated] and updates the
## [member node]s properties
func _on_position_offset_changed() -> void:
	node.position.x = position_offset.x
	node.position.y = position_offset.y
	node.position_updated.emit(node.position)
	(get_parent() as DeckRendererGraphEdit).dirty = true


## Connected to [member node]s [signal position_updated] to keep parity with the
## data position.
func _on_node_position_updated(new_position: Dictionary) -> void:
	position_offset_changed.disconnect(_on_position_offset_changed)
	position_offset.x = new_position.x
	position_offset.y = new_position.y
	position_offset_changed.connect(_on_position_offset_changed)
	(get_parent() as DeckRendererGraphEdit).dirty = true


func _on_resize_request(new_minsize: Vector2) -> void:
	node.set_meta(&"size", new_minsize)
	(get_parent() as DeckRendererGraphEdit).dirty = true


## Connected to [member node]s [signal port_added] handles setting up the specified
## [member Port.descriptor] with it's required nodes/signals etc. + adding the port
## using [method GraphNode.set_slot]
func _on_node_port_added(port_idx: int) -> void:
	var port := node.get_all_ports()[port_idx]
	update_port(port)


## Connected to [member node]s [signal port_removed], queue_frees the [Node]
## used for the descriptor, as well as using [method GraphNode.set_slot] to remove the slot.
func _on_node_port_removed(port_idx: int) -> void:
	set_slot(
		port_idx,
		false,
		0,
		Color.WHITE,
		false,
		0,
		Color.WHITE,
	)

	get_child(port_idx).queue_free()


## Connected to [member node]s [signal ports_updated].  Remakes all of the ports
## + their descriptors whenever this is received to allow keeping the Renderers ports up to date.
func _on_node_ports_updated() -> void:
	clear_all_slots()
	for c in get_children():
		c.queue_free()

	for port in node.get_all_ports():
		update_port(port)
	
	if get_child_count() == 0:
		create_group_help_text()
	await get_tree().process_frame
	
	size = Vector2()


func _on_node_renamed(new_name: String) -> void:
	title = new_name


func create_group_help_text() -> void:
	var l := Label.new()
	l.text = RendererShortcuts.interpolate_string("This group node has no used ports.\nPress {enter_group} to enter and edit it to see changes reflected.")
	add_child(l)


func update_port(port: Port) -> void:
	var descriptor_split := port.descriptor.split(":")
	var d: DescriptorContainer
	if DESCRIPTOR_SCENES.has(descriptor_split[0]):
		d = DESCRIPTOR_SCENES[descriptor_split[0]].instantiate()
	else:
		d = DESCRIPTOR_SCENES.label.instantiate()
	add_child(d)
	d.set_up_from_port(port, node)

	set_slot(
		port.index,
		port.port_type == DeckNode.PortType.INPUT,
		port.type,
		TYPE_COLORS[port.type],
		port.port_type == DeckNode.PortType.OUTPUT,
		port.type,
		TYPE_COLORS[port.type],
		PORT_USAGE_ICONS[port.usage_type],
		PORT_USAGE_ICONS[port.usage_type],
	)